Tehran. Iran's Ambassador to the United Nations, Amir Saeid Iravani, has condemned the US blockade imposed on Iranian ports, labeling it a serious violation of sovereignty.In a letter sent to UN Secretary-General Antonio Guterres, Iravani stated that the blockade is illegal and constitutes a grave breach of the fundamental principles of international maritime law.Previously, Guterres had urged all parties to respect the freedom of navigation in the Strait of Hormuz. This strait facilitates the supply of approximately 20 percent of the oil and gas consumed globally. The US implemented the blockade on Iranian ports starting Monday at 14:00 GMT. This...